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If you mean -370º C, the answer is no planet at all.

There is no such temperature in the Universe.

In case of -370º F [-223º C], the answer is Pluto (but it is now considered a dwarf planet).

Neptune and Uranus have a lower temperature than -370º F in the atmospheric tropopause (jovian planets have to solid surface).

Curiously, Neptune higher layers of the atmosphere are less cold that in lower troposphere, due to the high concentration of methane in upper atmosphere).

Other solar system bodies (like Triton moon) have even lower temperatures, but they are not planets.

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11y ago

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Neptune is the planet with an average temperature of about -400°F (-240°C) in its upper atmosphere, making it the coldest planet in our solar system. This extreme cold is due to Neptune's distance from the Sun and its composition of mainly hydrogen, helium, and methane gases.

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10mo ago
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Saturn

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11y ago
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Q: What planet has a temperature of 400 degrees below 0?
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